Floor-dressing machine.



A. KRAEMER L A. CHILD.

FLOOR DRESSING MACHINE.

APPLIUATTON FILED JUNE 20,1905. 907,058. 'Patented Dec. 15, 1908.

3 SHEETS-SHEET l.

gam/OMM, wm.,

A. KRABMER 651A. CHILD. FLOOR DRESSING MACHINE.

APPLICATION PILED JUNE 20,1005, I

Patented Deo. 1b, 1908.

3 SHEETS SHEET 24 A. KRAEMER & A. CHILD.

FLOOR DRESSING MACHINE. APPLIGATIONWILED JUNE zo, 1905.

Patented Dec. 15, 1908.

3 SHEETSMSHEBT E" y? L @i W44/ forward extremity is threaded andengages.

sleeve 24 casing through on ero ed to u 20. he part form and securedthereto is e blower or suo tion fen 7 to which leeds an inlet conduit 8ond with which is also connected an outlet conduit 9. Upon what we willterm the forwerd extremity of this lotform, is mounted on upright frame10 a transverse ieee lzlthefa top. dl'lo this trensirng cree pretce 1s'attac s orwr yprojeo segmen s plate 13, foraging the support for theswing.'- mg freine id composed of upper end lower bore and 16, connectedby upright ports 17 and 1B.

The rear extremities ofthe bars l5 and 16 per and lower ports 19 and 9consists of en erm whose s screw l21 jou'rnoled in 22 and 23 Ynao'untedon the transverse part 12 of the portable platform. The forwardextremity of the arm '19 is provided with e depen togenmg 2 formed in erear extremity of e erm 15,

Vwhereby the seid erm is mounted to` swing on .the sleeve. In thissleeve is joornaled the u per part of e vertically die osed shoft 26.'llle port. 20 consists of a spin le ourncled in e bearing 27 mounted onthe forward extrcmitty of the platform 5. This spindle is provi ed withen upwardly project-.i 28 in which thc lower extnamity of t e shaft 26fits und is journeled.- The sleeve 28 posees through an opning 2,9formed in the reen extremity of t :erm 16 whereby the said arm isallowed to swing freely on thel sleeve.

By virtue of the connection of the enne l5 and 16 with the sleeves 24and g8 of the th parts 19 and 20, it is evident-that the freine 14 maybe swung at will around the exis of the shaft 2G ss e center. If it isdesired to tilt this-frame 14 or cause it to occupy e pleno inclined' tothe vertical, it is only neo cesary to turn the screw 2l. by inserting apin (not shown) inthe spertured extremity of the screw in the ordinarymanner. This willcause the arm 19 to move in the one.

direction or the other on the part 12 and as the sleeve 24 entere theerin 15 of the frame 1.4, this lateral movement will tilt the frame 14from the vertical position the one direction o the other, since theindie 29 is free to turn in its bearing 27 on t le platform. The owoning in the sleeve 24 is sli htly en larger interior-ly et its up' erand ower cxtromities, to prevent the s aft 26 from hind intherein.

tho fol-werd extremities of the arms 15 end 16, is jourmrled a hollowshalt 3U in the top of which is inserted a short sleeve 3l aoi cured tothe elicit hy n set screw 32. This sleeve s providedwith n. horizontalflange 33 at the top under which projectel e roller 34 mounted on thefree extremity of s leaf sprin 35 secured to the bur l5 by e stud bolt36. his spgingeupported rel er gives e sleeve comes 'rms prei tingoutwardly and downwardly and me at the bottom into s. bearing 39 locatedreetly beneath the center of the u 4n which are oosely mounted tworol-1ers 4 which perform the ebrading, smoothing or floor dressingfunction when the machine is in use. These rollers are preferablyprovided -mth a covermgof eend pa or o-r a similar smoothing or ebredinsur ace whereby they Vere adapted to pe orm the function heretoforestated These sand e er sheeths which we prefer to rovi e e rollers, areattscheble und detec able in o manner hereinafter more fully described.

The two rollers 41 are located on opilosite sides of the center of theaxle 40 .end e inner extremity of oooh is provided with a beveled geen@the seid. gears being fast on their respective rollers end meshing withan interposed beveled gear 43' engaging the two Q ears 42 et the top.This gear 43 is fest on he lower extremity of o shaft 44 phasing throughthe hollow shaft 30 and journal'edin the sleeves at the extremities ofthe hollow shaft. The up er extremity oi the shaft 44, is provided w1 ehand ieee 45, in which the shaft fits loosely so piece istheld in thehand the shaft may rotate tree its upper extremity being swivelcd in eisndlo es indicated in Fig. e. The hollow shaft 30 is provided'extcriorly with n grooved collar 46 which is engaged h e. pin 47carried by n. bifurceted lever 48 fu cmrned on the ber 18 et 49, itsouterextrexnity bein rovided with a., handle 50. B y means o t lisleverwhich is preferably provided with two pine-i7 entering thecircumferentiel groove of the collnrll, the hollow the spring-su portedroller 34 raises the ho lor shaft and consequently the obrodingi rollersfrom thel surface.

n order to limit the downward movement of the hollow shalt, the latteris provided junt above the ann 16 with a stop coller 51 edjusteblyconnected with the hollow shalt by a set screw 52. i l

The ebmding rollers 41 and their operating eers, are inelosed except etVthebottom by a ouci 53 which is connected withthe sleeve 37 of t ehollow shaft in any suitable manner asby e ring 54 surroundnhthe sleeveend. spider orme 55 connectin le ring-with on upwardly meeting circo arpart 58 of the housing. ring 54 may be connected sleeve and throulghwhich passes en axle 40 at while the seid rassure on the lover 40 isredii with the sleeve 37 floymenns of a. set screwri 57 housin `arenornmllyelosed by sliding gutes 58. en the device is in use the housing53 rotates with the hollow sleeve 30, and its circularpart 58 protrudesinto u stationary. housing port 59 connected with the forward extremityof the arm 16 by means of screws 38. The protruding housing port 5Sengages e packing rin? or washer 6() carried by the lower part o thestationary housing 59, whereby e dust-tight joint is formed between thestetimmry and rotary housing members.

In order to protect the gears 42 und@ from the dust, a, gear case l islocated within the housing 53, its upper part fitting closely around thesleeve 37 of the hollow shaft, while its lower part engages oireurnvferential grooves 62 formed in the gears 42, whereby the geur case moveswith the ubraeling rollers in their orbital travel hut is relativelystationary so for es their rotary or axial travel is concerned.

With the stationary housing member 59, is connected en outlet tube 63Awhose inner extremity surrounds an opening 64 formed in the housing 5).To the outer extremity of the outlet 63, is connected the suctionconduit 8 leading to thegblower 7 es heretofore ex lained.

o the to' of the shaft 44, is made fest e pulley 66 W ich is connectedby e cross belt 66 with a pulley (i7 fast on the upper extremityo theshaft 26. stop oollar 5] on the hollow shaft, is ruedo fest a relativelylasse ullct` t?? connected br l e belt 59 with e smaller pulley ljfastor; u eountershallt 7l which is olso provided with s relatively largepulley 72 connected by eA belt 7.3.with u smaller Julley 74 fest on theshaft 26. Also fest on lhis shaft 2G is o. pulley '75 connected by menusof u bolt 76 with e' pulley 77 fast on the motor shaft T8. This motorshaft is ulso providwl with u pulley 79 connected by moons of a belt 8Uwith u pulley 81 first on the blower shaft S12.

Fronij the foregoing description it will be understood, that as themotor shalt 7S is ron tated, power will be transmitted to theblowershaft 82 and to the shaft 26. Freni this shaft 26, motion will betransmitted through the belts 73.end 69 end the pulleys 74, 72, and 68,to the hollow shaft 30. From this shaft 26 rotary motion will also betransmitted throughthe instrumentality of the cross belt 66 und thepulleys 67 and 65, to the shaft 44, whose movement will be in adirection the reverse of the hollow shaft 30 through which it posses.Hence it will be understood that the rotary action of the shaft 44carrying the gear 43, will impart ro temes tation to the two obi-udine;rollers 4 1. in rol verse din ions by virtue of the goers e2 carried h,k`he rollers and menging the geur 43 nt aliafwetrieally opposite pointe.,it will also be unilenitood that the the hollow shaft 30, will so rtrotary movement to the axle 40 nis; mi. its ons?. este, but around thearisfof the hollow shaft, und in the plane. of the axis of the eide,thus ing sn orbital travel to the etmrling ro simultaneously with theirrot 'L in s. direction opposite to tin otsry notion, thus increasing,the ffriartion r .el-produit; en. tion of the. rollers upon thesurfsuse. to be dressed.

` The rollers 4l uro lilollew und their cylindrical Walls A as shown inthe drewing ure composed of hin metal and in their extremities areinserted heads B. zillu. eylindrioul roller parts are preferably covemdwith cerpeting material l) or some other suitable libroue yieldingmateriel, the sunto being referobly permanently attached to theoylindrioal shells of the rollers. A suitable covering l.) of sbmdingmateriel as simil paper ma f be applied to @sich roller in order' i sotion :fz-.inl

to give tie desired nbrudini; or, :unonthing sry eolien o? fi Wien bysumti/ier :nljrsstmwill of the seo Just above tlief tional port olf theshell sheath muy bc lomenoil u' .slip oil'. This feelin:- v or thedrawing; in 'w i hinged portion or segment f cli oi the roller. Thisportion is hinged lo e lug AZ attached to the holly of the shell. Thehinge pin is designated AJ.

To the extremity of thc shell-segment A" remote from the hinge, iswinnt-etsii a. link E as shown ut Fi This link E is commented with alink (l its shown et .ifi l; while the iinl; Gis loosely connected will.i spindle l which is journulod in the heads ol the rollos' une! adaptedto be inunipulutod from ono enel thereof hy means of a wrenrh, (notshounj the extremity of thc roller being sshioncd for that purpose. Itwillbe observed that the links E and G form u toggle joint. By turningthe spindle l to throw the links 1.o the dotted line osition, lhcsection A.' will be drawn inwardly, thus reducing the diam eter of theroller wherelln: eration located. There should lic it leest fwo este, oflinks E and G Connected is shown in ha; one set being m. escl; wud oi':he rolls-r. As each set is s. duplicate nl' ille other, not beenthought ueocssurjf' to illustrer;

intl la the .Ii lim.

more than one toggle joint attachment in the drawing. There may ofcourse be more than two to rglo joints if required. VBut in any event te construction in this regard would be a mere duplication of that shownin Fig. @Assuming that the section A is in the position shown by dottedlines, it is evident that an ahrading sheath may be easily aI- )lied tothe roller or removed therefrom. lThe size of this sheath must of coursebe sc regulated that when the hinged section A is in the dotted line theroller or slip o therefrom readily; while when the hinged part A isthrown to the Ifull line position shown in Fig. 6, the abradinV sheathwillhe locked seeurel on the ro ler. The tog le devices are pre erablyso regulated that w ien the section A is thrown outwardly to the fullline position shown in Fig. (i, t ie toggle members will be thrownslightly beyond the dead center as shown in full lines in Fi f. 6whereby there will be no tendency for these members to accidentallychange their position during the use of the machine in t e regularperformance of lts function.

It should be stated that when the swinging frame 14 has been moved toany position, it may be desirable to hold it in the same position forsome little time. We have therefore provided the arm 15 immediatelyabove the support 13, with a set screw 9U which may be screwed againstthe su A)porting plate 13 whereby the frame ma locked in any desiredposition as willi stood.

Attention is called to the fact that the power from the motor istransmitted to the two shafts 30 and 44, in such a manner th-'at theshaft 44 which rotates the abrading rollers, has much greater speed thanthe shaft 30 which imparts the orbital travel to the rollers or rotatestheir axle 40 in a plane parallel with the axis of the latter. In otherwords the speed of the motor shaft is great] reduced wien the motion istransmitte to the shaft 30, while the speed of the, shaft 44 as shown inthe drawing 1s substantially the same as that of the motor shaft. givinga comparatively high speedy to the shaft which imparts the rotarymovement to the abrading rollers as heretoforeexplained There is anadvantage in having each roller housed independently of the otherroller, since this construction permits the ex osure of the surfaceacted on between the rollers so that the condition of the surfaceI maybe known to the operator without moving the smoothing or dressing headThe term head maly if desired be employed to designate the rol ersmounted on their radial arms or individual axles and connected to haveboth rotary and orbital travel as heretofore described. In order toallow the individual osition it will slip on toi l l housing of 'eachroller, it of course becomes necessary that the housfor the rollers mustrotate therewith. This also further 11ecessitates a stationa housingmember 59 with which the suction conduit 8 is conneeted as heretoforedescribed. It is also necessary that there should be a tight jointbetween the rotary and stationary housing members as shown at 60 in 4 ofthe drawing.

The portable platform 5 may be termed a carriage, since' it may be ofany suitable construction ada )ted to perform the function heretoforeexp ained.

In order to permit the tilting of the swinging frame 14 from thevertical position 1n either direction through the instrumentality of thearm 19, it is necessary that the bearing in the arm 15 which receivesthe sleeve 24, should be slightly enlarged ab ove and oelow, since itmust be assumed that the sleeve 24 occupies a vertical tion that theframe part 12 u on which t arm y19 is mounted occupies a orizontal po-`sition, the sleeve 19 moving laterally in the horizontal plane. It maybe stated that it is not considered that it will ever be necessary totilt the frame 14 to any considerable extent, from the vertical positionbut it is thought that it may be desirable under some circumstances tothrow this frame slightly from the vertical in one direction or theother, and this slight adjustment it is believed will be practicable byslightly enlar ing the bearing or opening 25 at the top an bottom asshown in Fig. 2 of the drawing.

Referring again to Fig. 6, the spindle I ma be journaled in suitablebearings I attached to the heads B on the rollers. Only one of thesebearings is indicated in the drawing, butit will be readily understoodthat there is sinilar bearing attached to the opposite rea i Having thusdescribed our invention, what we claim is: Y

1. 'I 11 a machine of the class described, the combination of a portablestructure, a motor thereon, a frame mounted to swing on said structure,a pair. of rollers mounted to rotate, an abrading sheath removablyconnected with said rollers, and means mounted on the swinging` platformand actuated from the said motor for simultaneousl imparting rotarymovement to both ro 1ers in reverse directions.

2. In a machine of combination of a portable structure, a motor thereon,a frame mounted to swing on said structure. an axle carried b thevswinging frame, a pair of rollers loose y mounted on the axle, anabrading sheath removably connected with said rollers, and' meansmounted Qon the swinging frame and actuated from the motor on theportable structure for impartposition on the assumpthe class describedtheisb ing-rotary movements to the rollers in reverse directions, andsimultaneously actuar`- ing the axle to impart orbital travel to therollers in a direction opposing their individi combination of a portableframe, a motor carried thereb a frame mounted to swing on the portableloose thereon, a hollow shaft journaled in the swinging frame andconnected to the axle between the rollers, yieldin means connected withthe frame for regu ating said hollow shaft, another shaft passingthrough the hollow shaft, a. gearing connection between the framefanaxle, two rollersY last named shaft and the two rollers whereby therotation of the said shaft imparts motion to the rollers in reversedirections, a motor mounted on the ortable frame, and means connectedwith tlie motor for operatin the two Shafts, whereby the rollers aregiven oth rotary and orbital travel in opposing directions for thepurpose set forth. y In testimony whereof we alx our signatures inpresence of two Witnesses.

AUGUST KRAEMER. ARTHUR CHILD. 'Vitnesses:

A. J. OBnmN, DENA NELSON.

